text: He was born in Ballycommon, County Offaly, to Elizabeth Arabin and lieutenant-colonel Daniel Chenevix of the Royal Irish Artillery. His 3x great grandfather, Reverend Philip Chevenix, was a Huguenot settler who left France after Louis XIV's Edict of Fontainebleau revoked the earlier Edict of Nantes which had given additional rights to Protestants. His great uncle Richard, and namesake, was the Church of Ireland Bishop of Waterford and Lismore.
  His sister, Sarah Elizabeth, married Captain Hugh Tuite of Sonna, Co. Westmeath, twice Member of Parliament for that county.
  On 4 June 1812 he married "an aging French beauty of dubious reputation", Countess Jeanne Francoise de Rouault (?-1836), the widow of Comte Charles de Rouault, whom he had met at the home of Sir John Sebright.